The world's first game show which invoked a bluescreen, "Knightmare" took four young people, one who donned the "Helmet of Justice" and thrown into the bluescreened "Dungeon of Confusion" in the role of a bold dungeoneer, only to be guided by his three advisors who would guide dungeoneer through the various challenges of the dungeons.  
Never settling for low difficulty as many children's games shows would do, only 8 teams in a course of 8 seasons, out of about 100 episodes ever mastered the dungeons.  
This is the definitive fansite for Knightmare.  
For children of the 90s, this is like D&D meets Nick Arcade. Personally I find this more compelling than Nick Arcade and have been hooked and watching episodes on YouTube.